Lavoie LA-265A: Difference between revisions

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Lavoie LA-265A (view source)

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The Lavoie LA-265A is a 33MHz scope that takes  
{{Oscilloscope Sidebar
[[letter-series and 1-series plug-ins]].   
|manufacturer=Lavoie
|model=LA-265A
|image=LA265A front.JPG
|caption=Lavoie LA265A with [[Lavoie LA-265-CA]] Plug-in
|introduced=(?)
|discontinued=(?)
|summary=33 MHz oscilloscope
|designers=
|series=500-series scopes
|manuals=
* [http://w140.com/LA265A.pdf Lavoie LA-265-A Manual (PDF)]
}}
The '''Lavoie LA-265A''' is a 33 MHz scope that takes [[letter-series and 1-series plug-ins]].   
It is an unauthorized clone of a [[545|Tektronix 545A]] made for a defense contract by [[Lavoie Laboratories]].
 
It has two timebases, which allows delayed triggering.   
It has two timebases, which allows delayed triggering.   
It is a military cloned Tektronix [[545]]A


==Internals==
=== Electrical difference to 545 ===
The high-voltage circuit is not identical to that of the Tektronix [[545|545A]].
Neon lamps are used to stabilize the high voltage in brightness circuit.
However, the neon lamp stabilizer is often faulty - the lamps aged too fast, with the result that the trace flickers.


== Electrical difference to 545 ==
=== Mechanical difference to 545 ===
The high-voltage circuit is identical to that of the Tektronix [[545|545A]].
The mains transformer is potted.
Glow lamps are used to stabilize the high voltage in brightness circuit.
Unlike Tektronix instruments of the same era, which require silver-bearing solder, ordinary solder is fine for working on the Lavoie, because its terminal strips have tin-plated steel inserts.
However, the glow lamp stabilizer is often faulty. 
The lamps aged too fast, with the result that the trace flickers.
 
== Mechanically difference to 545 ==
Transformer is potted.
Ceramic terminals may soldering with ordinarily solder, because terminals has tin-plated steel insert.


==Links==
* [http://www.radiomuseum.org/forum/lavoie_la_265a_a_superb_tek_clone.html LA-265A, a superb Tek clone] (radiomuseum.org forum)
* [http://www.radiomuseum.org/r/lavoie_oscilloscope_la_265_ala26.html radiomuseum.org page for LA-265A]


==Pictures==
<gallery>
<gallery>
Image:LA265A_1.jpg|Lavoie LA265A with Lavoie LA-265CA Plugin
LA265A_1.jpg | Lavoie LA265A with [[Lavoie LA-265-CA]] Plug-in
Image:LA265A_2.jpg|Terminals with tin-plated steel insert
Lavoie ca plugin.jpg | [[Lavoie LA-265-CA]] Plug-in
LA265A_2.jpg | Ceramic terminals with tin-plated steel insert
LA265A_HV.png | Schematic of HV-Supply, glow stabilizer
Lavoie la-265a 1.jpg|Lavoie LA-265A with Tektronix [[B|Type B]]
Lavoie la-265a 2.jpg|Lavoie LA-265A with Tektronix [[B|Type B]]
Lavoie la-265a 3.jpg|Lavoie LA-265A with Tektronix [[B|Type B]]
Lavoie la-265a 4.jpg|Lavoie LA-265A with Tektronix [[B|Type B]]
Black la265a 1.jpg|Black front LA-265A
La 265a side.jpg|Side view
La265a rear.jpg|Rear view
</gallery>
</gallery>
[[Category:500 series scopes]]
[[Category:Lavoie products]]
[[Category:Clones of Tektronix instruments]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/8411...62841"

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